| 摘要 |
PROBLEM TO BE SOLVED: To enable manufacturing, without depending on the molding rate in extrusion molding by guiding a magnet compd. near the outlet of a nozzle to the outlet of the nozzle, without contacting the nozzle inner wall. SOLUTION: For continuously extruding a compd. from a nozzle 1 attached to the top end of an extruder, a magnetic field is applied to the nozzle 1 to arrange in the magnetic field direction easy magnetization axes of grains of a magnetic powder in the compd. 6 passing a passage 4 of the nozzle 1, near the outlet of which the compd. 6 is guided to the outlet of the nozzle 1, without contacting the inner wall of the passage 4. Specifically, the passage diameters near the outlet of the passage 4 of the nozzle 1 are equally expanded into an analogous passage to form a magnetizing zone, having a space outside the expanded passage of the passage 4. In the magnetizing zone, magnetic field can be applied in a process of moving a molding, having a given shape after passing through the passage 4 without contacting the nozzle inner wall. |
